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  • TB/T 456.2-2019 机车车辆自动车钩缓冲装置 第2部分:自动车钩及附件 Automatic coupler and draft gears for rolling...2024-02-01
  • ISO 20846-2019 石油产品--汽车燃料硫含量的测定--紫外荧光法 Petroleum products -- Determination of sulfur cont...2024-02-01
  • LY/T 3096-2019 速冻山野菜 Frozen edible wild potherb2024-02-01
  • SY/T 7045-2016 离心泵和回转泵轴封系统 Pumps-shaft sealing systems for centrifugal and rotary pumps...2024-02-01
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  • NF A06-654-2020 Chemical analysis of titnium and titanium alloys - Determination of nitrogen content - Titr...2024-02-01
  • YC/T 555-2017 再造烟叶生产企业清洁生产评价准则 Criteria for cleaner production of reconstituted tobacco indu...2024-02-01
  • IEEE 1865-2019 Maintenance and Test of Distributed Control Systems in Thermal Power Stations: General Requi...2024-02-01
  • SL 756.9-2017 土工原位测试专用仪器校验方法 第9部分:动力触探仪 Calibration code for in-situ geotechnical test...2024-02-01
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